Publicly discuss the IPv6 transition method they plan to use
Explain their (LG's) deployment across the rest of Europe already using that transition mechanism
Explain the changes to their core network and voice networks to enable IPv6
Run a trial with more than 13,000 users (estimated)
Commit to it coming "soon" with no caveats (Remember the best we've had is "second half of 2018 subject to content providers")
Sure, they didn't put a date on the launch. I know from personal experience what it takes to put a date on a large product launch. It's not fun and I can understand why they didn't announce that at a user group meeting like the IPv6 Council.
From all of the evidence VM are publicly serious about deploying IPv6 for the first time. Given the size of the UK VM deployment is going to be approximately what they have already deployed across Europe it's not surprising that we're going last but it seems almost certain that we're about to go.